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ASRock

ASRock B550M-ITX/AC Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors motherboard Mini ITX

  • Based on 779 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Apr 21
Order within 3 hours and 13 minutes
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Style: Motherboard


Features

  • Supports AMD AM4 Socket Ryzen 3000, 3000 G-Series, 4000 G-Series, 5000 and 5000 G-Series Desktop Processors but not compatible with AMD Athlon Processors
  • Supports DDR4 4733+ (OC)
  • Graphics Output: DisplayPort, HDMI
  • 7.1 CH HD Audio (Realtek ALC887 Audio Codec)

Description

Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well. Operating System Microsoft Windows 10 64-bit.

Brand: ASRock


CPU Socket: Socket AM4


Compatible Devices: Personal Computer


RAM Memory Technology: DDR4


Compatible Processors: AMD Ryzen 5000/4000/3000 Series


Chipset Type: AMD B550


Memory Clock Speed: 2400 MHz


Platform: Windows 10, Windows 11


Model Name: B550M-ITX/AC


CPU Model: 5X86


Processor Socket: Socket AM4


Compatible Devices: Personal Computer


RAM Memory Technology: DDR4


Compatible Processors: AMD Ryzen 5000/4000/3000 Series


Chipset Type: AMD B550


Memory Clock Speed: 2400 MHz


Platform: Windows 10, Windows 11


CPU Model: 5X86


Memory Storage Capacity: 64 GB


Ram Memory Maximum Size: 64 GB


Main Power Connector Type: 24-Pin


Graphics Card Interface: AGP


Memory Slots Available: 2


Number of Ports: 11


S/PDIF Connector Type: Optical


System Bus Standard Supported: SATA 3


Total SATA Ports: 4


USB 2.0: 1


Total Usb Ports: 10


Number of Ethernet Ports: 1


Total Number of HDMI Ports: 1


Total PCIe Ports: 1


Brand: ASRock


Model Name: B550M-ITX/AC


Model Number: B550M-ITX/AC


Manufacturer: ASRock


Global Trade Identification Number: 27


Item Weight: 425 Grams


Warranty Description: 3 years


Item Dimensions L x W x H: 5.8"L x 2.5"W x 11"H


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Apr 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great AM4 motherboard for ITX/SFF builds
Style: Motherboard
Review Image by TheGerleys
Review Image by TheGerleys
Review Image by TheGerleys
Review Image by TheGerleys
Review Image by TheGerleys
I’ve bought this motherboard more than any other motherboard in my life, and I’ve bought many. It’s all you need for AM4 ITX/SFF builds. Easy to use. Runs stable with XMP/EXPO memory overclock. Came with the latest BIOS installed. I used a Ryzen 5600X and RTX 5070 with this motherboard. Ethernet, Wifi, and Bluetooth work right out of the box. ... show more
Reviewed in the United States on March 31, 2026 by TheGerleys
    • Hasn't let me down great for modest gaming.
Style: Motherboard
Before you start building I'd recommend swapping out wifi card with a ax211 or better. I put a ryzen 5 3600 in it, dual ddr4 16gb 3200mhz ram kit in it (32gb total). 500w psu, and a old 3060ti I had laying around in SFF case with handle. CPU and motherboard temp are close in temperature. So if gaming and CPU is around 63c motherboard would be displaying a temp of something like 58c. I'm only mentioning this cause people are saying the thermal plate for motherboard is too small. If you put something crazy on this board like a 4080 with a 5950x 16 core CPU, and 4000+mhz ddr4 ram. I can't say for sure, but I have no doubt that plate would be a problem. Keep in mind this is a budget board, and you shouldn't expect miracles. That being said me and my stepson played WWE 2k24 for hooooouuurrss multiple times on it so far. No issue at all. First time buying a ASRock board as well and the bios and ASRock apps seem kinda crude and dated compared to MSI or ROG, but definitely has everything you need to modify bios, fan speed, rgb etc. I kinda like it. I'm real happy with purchase. ... show more
Reviewed in the United States on March 12, 2024 by Ortron
    • A great product with a great price!
Style: Motherboard
It's solid, convenient, and easy to use. The included instruction sheet could be a little more clear but it's usable. I quite like Asrock boards. They always do a great job for me.
Reviewed in the United States on January 14, 2026 by Dave E.
    • Good BIOS menu and function, experienced blue screen due to BIOS
Style: Motherboard
Used this board for a mini ITX build. I think the board is well built, includes the most important headers (no USB C header for case sadly) and has a good BIOS menu with plenty of settings to use XMP and other options. My Ryzen 5 5600x worked out of box and did not require a BIOS update. This board was 100% functional for the first 3 months I had it, then I started to experience blue screens that I could not solve. Finally, after a couple days and a few hours, I figured out that it was a BIOS issue and when I updated the BIOS and cleaned my PC, it worked fine again. I like the board, I think it has exceptional value in a budget board. I hope it continues to work into the future. ... show more
Reviewed in the United States on July 30, 2024 by bart
    • Working great with a Ryzen 5 5500
Style: Motherboard
It's a very nice budget motherboard. The 8 power phase design do help keep it running at normal temperatures. I did not need to update the firmware to run this CPU. I like that the motherboard supports the "Resizable BAR" GPU memory feature. When installing Windows 10 (final 22H2 release), I noticed the OS immediately downloaded the Realtek Audio Console App for me. It was nice not to have to worry about this. The motherboard is set to fast boot, but this can be changed in the BIOS settings should you need to train the motherboard with your RAM. Not much to say other than it was easy to setup and I am happy with the results. ... show more
Reviewed in the United States on February 5, 2026 by Restful Cargo
    • Worked fine until it didnt..
Style: Motherboard
Purchased this mobo from amazon. After a year I was getting major issues with the pc crashing own once in a while. Motherboard still under warranty and Asrock confirmed fault/confirmed warranty but after more than 4 weeks of back and forth neither Amazon nor Asrock are willing to replace, refund or repair the board! Had to buy a motherboard twice as expensive to fix the issue bscause of this horrible customer service from both Asrock and Amazon. ... show more
Reviewed in the United States on November 3, 2022 by Niklas P.
    • Great AM4 B550 Mobo
Style: Motherboard
Great cheap mini itx for for am4. Only problem with this is am4 is getting old but that's nothing to do with the product itself. Its easy to build on its small with a basic layout. Can fit inside of most mini itx cases you want and my bios came preupdated.
Reviewed in the United States on January 10, 2026 by nick J.
    • Paid for New, Got an Open Box
Style: Motherboard
Not sure how to rate this, because part of the rating is for the motherboard, and part is for Amazon. I gave 1 star to Amazon and 4 stars to the motherboard. That's an average score of 2.5, which I rounded up to 3. The Amazon Part I got an obviously open-box item instead of the new one I paid for. I won't buy any more computer components from Amazon because of that. That's no way to treat customers. Pros None that I can see. Cons Bad Amazon! No, no, no! The Motherboard Part Booted on the first try, and it seems to be functioning well. I had one blue screen crash, but I had several odd web applications open, and I think that one of them (or the combination thereof) caused the error. Other than that, I've had no problems. I've had good luck with ASRock motherboards (so far), and I tend to stick with a brand that works for me. Pros It's a good board for a small computer case. Hardware Monitor reports what looks like correct temperatures, which wasn't happening with the motherboard I replaced. Cons None that I can see. ... show more
Reviewed in the United States on December 12, 2023 by J Bennett

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